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<head><meta charset="utf-8"><title>closing duplicates of &quot;unstable trait predicates&quot; issue? · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html">closing duplicates of &quot;unstable trait predicates&quot; issue?</a></h3>

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<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/234860653" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#234860653">(Apr 16 2021 at 14:17)</a>:</h4>
<p><span class="user-mention" data-user-id="125294">@Aaron Hill</span> how do you feel about closing <a href="https://github.com/rust-lang/rust/issues/84237">https://github.com/rust-lang/rust/issues/84237</a> and all related issues as duplicates of <a href="https://github.com/rust-lang/rust/issues/83538">https://github.com/rust-lang/rust/issues/83538</a> ? realistically we're not going to get test cases for all of them, right?</p>



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<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/234901159" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#234901159">(Apr 16 2021 at 18:33)</a>:</h4>
<p>That's a different issue</p>



<a name="234901189"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/234901189" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#234901189">(Apr 16 2021 at 18:33)</a>:</h4>
<p>The <code>predicates_of</code> issue is not related to trait evaluation - I'm pretty sure all of those are caused by <code>rust-src</code> issues</p>



<a name="234901233"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/234901233" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#234901233">(Apr 16 2021 at 18:33)</a>:</h4>
<p>ah ok</p>



<a name="234901284"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/234901284" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#234901284">(Apr 16 2021 at 18:34)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/pull/83813">https://github.com/rust-lang/rust/pull/83813</a> is the first step to fixing that</p>



<a name="234901488"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/234901488" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#234901488">(Apr 16 2021 at 18:35)</a>:</h4>
<p>maybe close it in favor of <a href="https://github.com/rust-lang/rust/issues/83540">https://github.com/rust-lang/rust/issues/83540</a> then?</p>



<a name="234901516"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/234901516" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#234901516">(Apr 16 2021 at 18:35)</a>:</h4>
<p>I'm just a little concerned there's so many issues with the same cause we'll forget to close them all</p>



<a name="234902947"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/234902947" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#234902947">(Apr 16 2021 at 18:47)</a>:</h4>
<p>yeah, that sounds good</p>



<a name="235022841"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/235022841" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#235022841">(Apr 17 2021 at 22:12)</a>:</h4>
<p>It appears that there are at least two distinct issues with <code>predicates_of</code></p>



<a name="235022863"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/closing%20duplicates%20of%20%22unstable%20trait%20predicates%22%20issue%3F/near/235022863" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/closing.20duplicates.20of.20.22unstable.20trait.20predicates.22.20issue.3F.html#235022863">(Apr 17 2021 at 22:13)</a>:</h4>
<p>Someone opened <a href="https://github.com/rust-lang/rust/issues/84275">https://github.com/rust-lang/rust/issues/84275</a>, which doesn't involve any standard library spans at all</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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